Function call with parameters that may be unsafe error

[etrusks]

Hey, I was trying to implement this Tnode class that has to store array of chars on free store to represent word and a simple count variable.

#include <string>
#include <algorithm>
#include <iostream>

struct Tnode {

	char* word;
	int count;
	Tnode* left;
	Tnode* right;

	Tnode(const std::string&, int);
	~Tnode() { delete[] word; }
};

Tnode::Tnode(const std::string& s = {}, int i = {}) :  count{ i }, left{ nullptr }, right{ nullptr } {
	word = new char[s.size()+1];

	std::copy(s.begin(), s.end(), word);       //<------------- Something wrong here ???
	word[s.size()] = '\0';
}


int main() {

	Tnode node{"bear", 50};

	return 0;
}

For some reason compiler doesn't like this line
std::copy(s.begin(), s.end(), word);
and here is the error message

Severity Code Description Project File Line
Error C4996 'std::_Copy_impl': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators' exercise_8 c:\program files (x86)\microsoft visual studio 14.0\vc\include\xutility 2230

What is so wrong about it?

[Moschops]

Microsoft don't like a number of standard functions so they throw this warning when you use some functions they don't like. They want you to use different functions.

[etrusks]

Ok update : when I compile it in cpp.sh website it works just fine but my Visual Studio 2015 doesnt like it for some reason. So code must be fine.

[etrusks]

Ok tnx for answer man appreciate it :)